NEW : allow to save a parent warehouse

# Conflicts:
#	htdocs/product/stock/card.php

htdocs/install/mysql/migration/4.0.0-5.0.0.sql

@@ -135,3 +135,5 @@ ALTER TABLE llx_accounting_bookkeeping ADD COLUMN tms               timestamp;
 ALTER TABLE llx_accounting_account ADD INDEX uk_accounting_account (account_number, entity);
 
 ALTER TABLE llx_c_payment_term change fdm type_cdr tinyint
+
+ALTER TABLE llx_entrepot ADD COLUMN fk_parent integer DEFAULT NULL

htdocs/install/mysql/tables/llx_entrepot.sql

@@ -34,5 +34,6 @@ create table llx_entrepot
   fk_pays         integer DEFAULT 0,
   statut          tinyint DEFAULT 1,			-- 1 open, 0 close
   fk_user_author  integer,
-  import_key	  varchar(14)
+  import_key	  varchar(14),
+  fk_parent       integer DEFAULT NULL
 )ENGINE=innodb;